Gil can consume either pens or milkshakes. Both pens and milkshakes sell for $1. Gil finds that when his income is spent, his marginal utility of pens will be 10 while his marginal utility of milkshakes will be 8

Gil could increase his utility without violating his budget by consuming A) more pens and fewer milkshakes.
B) more pens and more milkshakes.
C) fewer pens and fewer milkshakes.
D) fewer pens and more milkshakes.

A